From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261392AbVF0PXp (ORCPT ); Mon, 27 Jun 2005 11:23:45 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261292AbVF0PXn (ORCPT ); Mon, 27 Jun 2005 11:23:43 -0400 Received: from services106.cs.uwaterloo.ca ([129.97.152.164]:43993 "EHLO services106.cs.uwaterloo.ca") by vger.kernel.org with ESMTP id S261662AbVF0O6W (ORCPT ); Mon, 27 Jun 2005 10:58:22 -0400 X-Mailer: emacs 21.4.1 (via feedmail 8 I) To: Valdis.Kletnieks@vt.edu Cc: Lincoln Dale , Gregory Maxwell , Hans Reiser , Horst von Brand , Jeff Garzik , Christoph Hellwig , Andrew Morton , linux-kernel@vger.kernel.org, ReiserFS List Subject: Re: reiser4 plugins From: Hubert Chan In-Reply-To: <200506270459.j5R4xdZp005659@turing-police.cc.vt.edu> (Valdis Kletnieks's message of "Mon, 27 Jun 2005 00:59:39 -0400") References: <200506240241.j5O2f1eb005609@laptop11.inf.utfsm.cl> <42BCD93B.7030608@slaphack.com> <200506251420.j5PEKce4006891@turing-police.cc.vt.edu> <42BDA377.6070303@slaphack.com> <200506252031.j5PKVb4Y004482@turing-police.cc.vt.edu> <42BDC422.6020401@namesys.com> <42BE3645.4070806@cisco.com> <42BE563D.4000402@cisco.com> <42BE5DB6.8040103@slaphack.com> <200506261816.j5QIGMdI010142@turing-police.cc.vt.edu> <42BF08CF.2020703@slaphack.com> <200506262105.j5QL5kdR018609@turing-police.cc.vt.edu> <42BF2DC4.8030901@slaphack.com> <200506270040.j5R0eUNA030632@turing-police.cc.vt.edu> <87y88webpo.fsf@evinrude.uhoreg.ca> <200506270459.j5R4xdZp005659@turing-police.cc.vt.edu> X-Hashcash: 1:23:050627:valdis.kletnieks@vt.edu::Pqy/WJGteOrpYkln:00000000000000000000000000000000000000lA1V X-Hashcash: 1:23:050627:ltd@cisco.com::KSl/yoJ0x2by9bZ1:0000pO3D X-Hashcash: 1:23:050627:gmaxwell@gmail.com::kLNHzZWK93wz23tK:00000000000000000000000000000000000000000006zUK X-Hashcash: 1:23:050627:reiser@namesys.com::2JeWsytQpDVIIqHd:00000000000000000000000000000000000000000008C6z X-Hashcash: 1:23:050627:vonbrand@inf.utfsm.cl::WwxOK6DEUPyKx+IW:0000000000000000000000000000000000000000ftFg X-Hashcash: 1:23:050627:jgarzik@pobox.com::6oWKSsl25ik0ptqw:000000000000000000000000000000000000000000001X80 X-Hashcash: 1:23:050627:hch@infradead.org::ye76Rp2JOMtrlzY9:00000000000000000000000000000000000000000001QzUR X-Hashcash: 1:23:050627:akpm@osdl.org::ozYSRFa6HPfDryiW:0000AsBB X-Hashcash: 1:23:050627:linux-kernel@vger.kernel.org::e4Lodei/MHiXvULs:0000000000000000000000000000000000EZH X-Hashcash: 1:23:050627:reiserfs-list@namesys.com::djdlP1OlfP6HyKf9:0000000000000000000000000000000000003jlY Date: Mon, 27 Jun 2005 10:58:02 -0400 Message-ID: <873br3u9s5.fsf@evinrude.uhoreg.ca> User-Agent: Gnus/5.1007 (Gnus v5.10.7) Emacs/21.4 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Miltered: at rhadamanthus with ID 42C01434.006 by Joe's j-chkmail (http://j-chkmail.ensmp.fr)! Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 27 Jun 2005 00:59:39 -0400, Valdis.Kletnieks@vt.edu said: > On Sun, 26 Jun 2005 23:10:43 EDT, Hubert Chan said: >> On Sun, 26 Jun 2005 20:40:29 -0400, Valdis.Kletnieks@vt.edu said: >> Oh, I'm waiting for the fun the first time somebody deploys a >> plugin that has similar semantics to 'chmod g+s dirname/' ;) > (You *did* notice it was set-GID of a *directory* not an executable > file, right?) >> Reiser4 plugins have to be compiled into the kernel. (They're not >> plugins in the sense that most people use that word.) And any admin >> who would compile that kind of plugin into the kernel needs to have >> his head > Oh? You saying that it *wont* be permitted for a user to say: [...] Sorry. I completely misunderstood what you were getting at. I thought that you were implying that with the right kind of plugin, users would be able to get around security measures. Of course, this is probably true, which means that plugins need to be coded carefully (as with everything else in the kernel). My point that I was trying to make was that users can't install arbitrary plugins, and the set of plugins available is controlled by the administrator. Since that wasn't what you were talking about, I retract my previous email. -- Hubert Chan - http://www.uhoreg.ca/ PGP/GnuPG key: 1024D/124B61FA Fingerprint: 96C5 012F 5F74 A5F7 1FF7 5291 AF29 C719 124B 61FA Key available at wwwkeys.pgp.net. Encrypted e-mail preferred.